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Chapters 1

Chapters 1. Introduction To Chemistry. CHAPTER OUTLINE. WHAT IS CHEMISTRY?. Materials of the universe can be of several forms:. Chemistry is the science that deals with the materials of the universe, and the changes they undergo. Gas:. air, oxygen. Liquid:.

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Chapters 1

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  1. Chapters 1 Introduction To Chemistry

  2. CHAPTER OUTLINE

  3. WHAT IS CHEMISTRY? • Materials of the universe can be of several forms: • Chemistry is the science that deals with the materials of the universe, and the changes they undergo. Gas: air, oxygen Liquid: water, gasoline, vinegar, orange juice Solid: rock, charcoal, table salt, sugar, wood

  4. CHANGES IN MATTER • Burning of charcoal charcoal + oxygen  carbon dioxide • Burning of gasoline Gasoline + oxygen  carbon dioxide + water +  +

  5. CHANGES IN MATTER • Fermentation of grape juice glucose  ethyl alcohol +carbon dioxide • Souring of wine Ethyl alcohol + oxygen  acetic acid  + isopropyl alcohol

  6. SCIENTIFICMETHOD • The scientific method is a process of creative thinking and testing aimed at objective and verifiable discoveries. • It is generally composed of the following steps:

  7. SCIENTIFICMETHOD NATURAL LAW Observations concurred by many. OBSERVATION HYPOTHESIS Facts that our ideas must explain Scientific guess or proposal that explains observations Conceptual assumptions that explain data from experiments. EXPERIMENT Procedure to test hypothesis. Measures one variable at a time Predicts related phenomena MODEL (THEORY)

  8. SCIENTIFICMETHOD OBSERVATION Theory modified if additional experiments do not support it HYPOTHESIS Hypothesis is changed if experiments do not support it. EXPERIMENT MODEL (THEORY)

  9. Success as a Beginning Chemist  • You must be curious and imaginative. • Be willing to do calculations. • Be committed to learning the material. • Do your homework.

  10. THE END

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